| 发明名称 |
CYCLIZATION TO FORM CEPHEM RING AND INTERMEDIATES THEREFOR |
| 摘要 |
<p>Process for cyclizing compounds to give 3-hydroxy-3-cephem compounds, comprises cyclizing a compound of the formula: wherein A and B are, independently, hydrogen, substituted or unsubstituted alkanoyl, substituted or unsubstituted aralkanoyl, or substituted or unsubstituted aroyl; X is hydroxy or carboxy-protecting group and Hal is halogen.</p> |
| 申请公布号 |
CA1095026(A) |
申请公布日期 |
1981.02.03 |
| 申请号 |
CA19790337975 |
申请日期 |
1979.10.19 |
| 申请人 |
SHIONOGI & CO. LTD. |
发明人 |
TSUJI, TERUJI;HAMASHIMA, YOSHIO;YOSHIOKA, MITSURU;NARISADA, MASAYUKI;TANIDA, HIROSHI;KOMENO, TAICHIRO;NAGATA, WATARU |
| 分类号 |
C07D205/095;C07D501/08;C07D501/10;C07D501/20;C07D501/59;(IPC1-7):C07D205/08;C07D501/14;C07D403/12 |
主分类号 |
C07D205/095 |
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